This project aims to build the DirectShow base classes on the latest Windows versions for GStreamer gst-plugins-bad DirectShow plugins.
All Microsoft source code must be used and redistributed under the corresponding EULA that you can find in include and src subfolders.
In particular, in section 2.a.i - Sample Code.:
You may modify, copy, and distribute the source and object code form of code marked as “sample.”
All content of include and src folders is directly copied (without modification) from Microsoft Windows SDK version 7.1 DVD (https://www.microsoft.com/en-us/download/details.aspx?id=8442), /Setup/WinSDKSamples installer, C:\Program Files (x86)\Microsoft SDKs\Windows Kits\v7.1A\samples\multimedia\baseclasses.
The project builds a static library called strmbase needed by GStreamer gst-plugins-bad to build /sys/dshowdecwrapper, /sys/dshowsrcwrapper and /sys/dshowvideosink plugins.
To build the strmbase library, just call:
meson builddir
ninja -C builddir
If you need to integrate this subproject with an old version of GStreamer source code that would not provide it, you can use the patch files in gst-patch subfolder. Just go to your GStreamer local git clone and run:
git apply /path/to/dshow-base-classes/gst-patch/*
before configuring meson.